![Defending champion and top-seed Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina at the Pacific Life Open tennis tournament in Defending champion and top-seed Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina at the Pacific Life Open tennis tournament in](https://c8.alamy.com/comp/2PBTCH6/defending-champion-and-top-seed-roger-federer-of-switzerland-examines-his-right-foot-during-a-medical-break-in-his-match-against-guillermo-canas-of-argentina-at-the-pacific-life-open-tennis-tournament-in-indian-wells-calif-sunday-march-11-2007-federer-had-his-feet-attended-to-by-a-trainer-twice-in-the-match-canas-upset-federer-7-5-6-2-ap-photoelise-amendola-2PBTCH6.jpg)
Defending champion and top-seed Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina at the Pacific Life Open tennis tournament in
![Switzerland's Roger Federer waves to the crowd as he walks off the court after his loss against Argentina's Guillermo Canas at the Pacific Life Open tennis tournament in Indian Wells, California March Switzerland's Roger Federer waves to the crowd as he walks off the court after his loss against Argentina's Guillermo Canas at the Pacific Life Open tennis tournament in Indian Wells, California March](https://c8.alamy.com/comp/2E77AAD/switzerlands-roger-federer-waves-to-the-crowd-as-he-walks-off-the-court-after-his-loss-against-argentinas-guillermo-canas-at-the-pacific-life-open-tennis-tournament-in-indian-wells-california-march-11-2007-it-was-federer-first-loss-which-ends-his-streak-of-41-consecutive-victories-reutersdanny-moloshok-united-states-2E77AAD.jpg)
Switzerland's Roger Federer waves to the crowd as he walks off the court after his loss against Argentina's Guillermo Canas at the Pacific Life Open tennis tournament in Indian Wells, California March
![Defending champion Roger Federer, of Switzerland, serves to Guillermo Canas, of Argentina, during their match at the Pacific Life Open tennis tournament in Indian Wells, Calif., Sunday, March 11, 2007. (AP Photo/Elise Defending champion Roger Federer, of Switzerland, serves to Guillermo Canas, of Argentina, during their match at the Pacific Life Open tennis tournament in Indian Wells, Calif., Sunday, March 11, 2007. (AP Photo/Elise](https://c8.alamy.com/comp/2PBTCMB/defending-champion-roger-federer-of-switzerland-serves-to-guillermo-canas-of-argentina-during-their-match-at-the-pacific-life-open-tennis-tournament-in-indian-wells-calif-sunday-march-11-2007-ap-photoelise-amendola-2PBTCMB.jpg)